Home / 642,124,763.83-886,117,100.92-377,823,874.69

Finding the Fourth Proportional to 642,124,763.83, 886,117,100.92 and 377,823,874.69

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Solution

The fourth proportional to 642,124,763.83, 886,117,100.92 and 377,823,874.69 is: 521,388,078.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,124,763.83 : 886,117,100.92 = 377,823,874.69 : x
  2. Step 2: Convert to fraction form
    642,124,763.83/886,117,100.92 = 377,823,874.69/x
  3. Step 3: Cross multiply
    642,124,763.83x = 886,117,100.92 × 377,823,874.69
  4. Step 4: Simplify right side
    642,124,763.83x = 334,796,196,498,664,128
  5. Step 5: Solve for x
    x = 334,796,196,498,664,128/642,124,763.83
  6. Step 6: Final answer
    x = 521,388,078.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.